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Parameters
- 2x16 characters LCD display,
- HD44780 compliant driver
- Blue negative
- Red, black characters
- Module size : 80 x 36 x 12 mm
- The dimensions of the sign: 2.45 x 5.00 mm
- Operating temperature range: -20 to +70 °C
- Weight: 35 g
Description
Popular alphanumeric LCD display, powered by 5 V. It is characterized by simple operation, high availability and numerous support for many microcontrollers. It has holes for goldpin connectors on both sides of the screen, allowing for connection of the display in any setting.
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Product compatible with Arduino The standard set of libraries and sample programs downloaded with the Arduino environment includes the LiquidCrystal library,which allows to operate the display. |
Exits
| No. | Name | Description |
| 1 | VSS | Mass |
| 2 | VDD | Power supply +5V |
| 3 | V0 | Contrast |
| 4 | RS |
Selection of the display instruction register (low state) or data register (high) |
| 5 | R/W | Reading (low state) / Recording (high state) |
| 6 | E | Unlocking the display |
| 7 | DB0 |
The data bus. |
| 8 | DB1 | |
| 9 | DB2 | |
| 10 | DB3 | |
| 11 | DB4 | |
| 12 | DB5 | |
| 13 | DB6 | |
| 14 | DB7 | |
| 15 | LEDA | Backlight power supply +5V |
| 16 | LEDK | Mass of the backlight |
Control
The display can be controlled in modes:
- 8-bit without reading the occupancy flag - eight data bus lines and two control lines (RS, E - RW connected to ground) are required for transmission.
- 8-bit with reading the occupancy flag - eight data bus lines and three control lines (RS, E, RW) are required for transmission.
- 4-bit with reading the occupancy flag - four data bus lines and three control lines (RS, E, RW) are required for transmission.
- 4-bit without reading the occupancy flag - four data bus lines and two control lines (RS, E, RW connected to ground) are required for transmission.)
The most common way of communication is 4-bit mode without reading the occupancy flag. Sending half a byte saves valuable I/O outputs of the microcontroller - only four data lines are used (eight are occupied in 8-bit mode). Not reading the occupancy flag makes software delays necessary, but saves another line - R/W. This pin can be permanently connected to the ground, as the data will only be transported one way, to the display.
Useful links |
